step 1, download this plugin
step 2, download the vanilla 2.2 here
step 3, unzip vanilla, let's just say the extracted folder is "vanilla"
step 4, unzip this plugin into vanilla/plugins/
step 5, follow this guide to install vanilla
step 6, once install, go to Dashboard -> Plugins and enable RankGold
step 7, in Dashboard -> Flood Control, please set "30 dicussions Within 30 seconds Or Spamblock For 1 minute"
note, plugin has been tested with vanilla 2.2 only.